Hillary Clinton warns Senator Kamala Harris and Senator Warren that they'll need "a high pain threshold" if they run in 2020

.@HillaryClinton warns @KamalaHarris and @SenWarren that they'll need "a high pain threshold" if they run in 2020 https://t.co/qN2R2nNRhK pic.twitter.com/wHsfbLzPJL

— POLITICO (@politico) October 10, 2017